/*
 * Copyright (c) 2001-2004 Caucho Technology, Inc.  All rights reserved.
 *
 * The Apache Software License, Version 1.1
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Caucho Technology (http://www.caucho.com/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "Hessian", "Resin", and "Caucho" must not be used to
 *    endorse or promote products derived from this software without prior
 *    written permission. For written permission, please contact
 *    info@caucho.com.
 *
 * 5. Products derived from this software may not be called "Resin"
 *    nor may "Resin" appear in their names without prior written
 *    permission of Caucho Technology.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @author Scott Ferguson
 */

package com.caucho.hessian.io;

import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.io.PrintWriter;

import java.util.logging.Logger;
import java.util.logging.Level;

/**
 * Debugging output stream for Hessian requests.
 */
public class HessianDebugOutputStream extends OutputStream {
	private OutputStream _os;

	private HessianDebugState _state;

	/**
	 * Creates an uninitialized Hessian input stream.
	 */
	public HessianDebugOutputStream(OutputStream os, PrintWriter dbg) {
		_os = os;

		_state = new HessianDebugState(dbg);
	}

	/**
	 * Creates an uninitialized Hessian input stream.
	 */
	public HessianDebugOutputStream(OutputStream os, Logger log, Level level) {
		this(os, new PrintWriter(new LogWriter(log, level)));
	}

	public void startTop2() {
		_state.startTop2();
	}

	public void startStreaming() {
		_state.startStreaming();
	}

	/**
	 * Writes a character.
	 */
	public void write(int ch) throws IOException {
		ch = ch & 0xff;

		_os.write(ch);

		_state.next(ch);
	}

	public void flush() throws IOException {
		_os.flush();
	}

	/**
	 * closes the stream.
	 */
	public void close() throws IOException {
		OutputStream os = _os;
		_os = null;

		if (os != null) {
			_state.next(-1);
			os.close();
		}

		_state.println();
	}

	static class LogWriter extends Writer {
		private Logger _log;
		private Level _level;
		private StringBuilder _sb = new StringBuilder();

		LogWriter(Logger log, Level level) {
			_log = log;
			_level = level;
		}

		public void write(char ch) {
			if (ch == '\n' && _sb.length() > 0) {
				_log.log(_level, _sb.toString());
				_sb.setLength(0);
			} else
				_sb.append((char) ch);
		}

		public void write(char[] buffer, int offset, int length) {
			for (int i = 0; i < length; i++) {
				char ch = buffer[offset + i];

				if (ch == '\n' && _sb.length() > 0) {
					_log.log(_level, _sb.toString());
					_sb.setLength(0);
				} else
					_sb.append((char) ch);
			}
		}

		public void flush() {
		}

		public void close() {
		}
	}
}
